• MESO: Mesoscale Discussion 1992

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sat Dec 11 01:42:36 2021
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    ACUS11 KWNS 110142
    SWOMCD
    SPC MCD 110141=20
    TNZ000-KYZ000-MOZ000-ARZ000-110245-

    Mesoscale Discussion 1992
    NWS Storm Prediction Center Norman OK
    0741 PM CST Fri Dec 10 2021

    Areas affected...Northeast Arkansas...southern Missouri...northwest Tennessee...and southwest Kentucky.

    Concerning...Tornado Watch 552...

    Valid 110141Z - 110245Z

    The severe weather threat for Tornado Watch 552 continues.

    SUMMARY...A strong to potentially violent tornado is ongoing in far northeastern Arkansas and is expected to persist.

    DISCUSSION...A mature and very strong supercell in northeast
    Arkansas is currently producing a very strong to potentially violent
    tornado. The downstream airmass remains very favorable with
    dewpoints near 70, strengthening/backing surface flow, and 0-1 km
    SRH in excess of 400 m2/s2 per KNQA VWP. This is yielding STP around
    5. Given the favorable downstream environment with no convection to
    disrupt this storm, expect the significant tornado threat to
    continue for at least a few more hours as this discrete, long-track
    supercell continues northeast.

    ..Bentley/Grams.. 12/11/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!rE99q2JwbrxKDPd3GyQjcitmfyOTMvIR2Faw1jp7KxzXyJI46oKNik49cb4ZVKy5I0KCDVoa$=
    for graphic product...

    ATTN...WFO...PAH...MEG...

    LAT...LON 35868917 35859018 35999035 36209014 36588927 36708865
    36608832 36378812 36258832 35868917=20



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